Graph with no data will set itself to time series mode

[leamingrad]

pyFlot decides whether to set its variables into timeseries mode using the following function:

def _get_axis_mode(self, axis):
    "will get the axis mode for the current series"
    if all([isinstance(getattr(s, axis), TimeVariable) for s in self._series]):
        return 'time'
    return None

However, if no data has been provided (for example if you want to use pyFlot as a shortcut to instantiate an empty graph and then fill it using ajax), this will set the x axis to be a time series variable.

Probably quickest to replace the above with something along the lines of:

def _get_axis_mode(self, axis):
    "will get the axis mode for the current series"
    series_list = [isinstance(getattr(s, axis), TimeVariable) for s in self._series]
    if all(series_list) and series_list:
        return 'time'
    return None